Cleaning electric kettles
a friend only drinks water that has been through the purifier on the water dispenser of her refrigerator. But she only drinks room temperature or warmer water. She is constantly heating water in a pan on the stove. someone recommended an electric kettle, or even a stovetop kettle (ease of pouring) but she feels there is no way to get the inside of a kettle clean as you can't open them up.
if anyone has any helpful hints it would be appreciated.